Look, I gotta do a water change in about a day or so, but there's somethings that I'm concerned about. Like Water Temp., pH, fish going into shock. If I get close enough to the real tank water in my tank, will be much of a problem? Because I was going to do one today but my dad "THINKS" he knows what to do even though I've done more research than him, says that you don't change the water at all. And I know if I do and I kill my fish , all im going to hear from him is "I told you. You don't want to listen." Can you help me on this water change? Thankz